An off-duty Cook County prosecutor allegedly bit a man in the leg during a scuffle outside a lingerie shop over the weekend, and she was charged with misdemeanor battery and trespassing, authorities said Monday. Sarah Naughton, 31, of Chicago, will be placed on administrative duty and won’t be allowed to litigate while her case is pending, said Sally Daly, a spokeswoman for the Cook County state’s attorney’s office. Naughton and Bradley Gould, 31, were in Taboo Tabou at 854 W. Belmont at 7:25 p.m. Saturday, police said. Witnesses said they appeared intoxicated and were causing a disturbance, police said. They …